The most useful part was how easy it was for me as my own assistant, I can do all of this from anywhere with no limitations or restrictions! So far there's not anything i dislike about call 2 dial but maybe when they make more software available we don't know what will be missing then? We have been using them since March 2016 so everything has gone smoothly up until now nothing bad at least yet :) If anyone wants good customer service give us some time before giving any feedback if someone needs help just ask and get instant answers because our team here are very helpful & friendly!!